Home / 40,110.40-60,139.04-21,378.56

Finding the Fourth Proportional to 40,110.40, 60,139.04 and 21,378.56

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Solution

The fourth proportional to 40,110.40, 60,139.04 and 21,378.56 is: 32,053.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,110.40 : 60,139.04 = 21,378.56 : x
  2. Step 2: Convert to fraction form
    40,110.40/60,139.04 = 21,378.56/x
  3. Step 3: Cross multiply
    40,110.40x = 60,139.04 × 21,378.56
  4. Step 4: Simplify right side
    40,110.40x = 1,285,686,074.98
  5. Step 5: Solve for x
    x = 1,285,686,074.98/40,110.40
  6. Step 6: Final answer
    x = 32,053.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.